Persulfate oxidation for remediation of polycyclic aromatic hydrocarbon contaminated soil
-
摘要: 介绍了过硫酸盐氧化作用的活化方法和机理,在此基础上设置了对比试验,分析了氢氧化钠和硫酸亚铁活化过硫酸钠氧化修复多环芳烃污染土壤的效果,探究了pH、硫酸亚铁与过硫酸钠物质的量之比及反应时间对硫酸亚铁/过硫酸钠体系去除多环芳烃的影响,并分析了反应产物的组分。结果表明:硫酸亚铁比氢氧化钠活化过硫酸钠氧化修复多环芳烃污染土壤的效果好;在pH为酸性或中性、硫酸亚铁与过硫酸钠物质的量之比为1∶2.0、反应时间为5 d时,对多环芳烃的去除效果最佳。在控制反应条件的基础上,过渡金属离子活化过硫酸钠是修复多环芳烃污染土壤的可行方法之一。Abstract: The activation methods and mechanism of persulfate oxidation were introduced. Based on this, comparative experiments were set up to analyze the effects of sodium hydroxide and ferrous sulfate activating sodium persulfate oxidation on the remediation of polycyclic aromatic hydrocarbons (PAHs) contaminated soil. The effects of pH, the ratio of ferrous sulfate to sodium persulfate, and the reaction time on the removal of PAHs by the ferrous sulfate/sodium persulfate system were investigated, and the composition of reaction products was studied. The results showed that compared with sodium hydroxide, ferrous sulfate had a better effect on remediating PAHs contaminated soil by activated sodium persulfate oxidation. When the pH was acidic or neutral, the quantity ratio of ferrous sulfate to sodium persulfate was 1∶2.0, and the reaction time was 5 days, the removal effect of PAHs was the best. Therefore, on the basis of controlling the reaction conditions, the activation of sodium persulfate by transition metal ions was one of the better methods to repair PAHs contaminated soil.
-
Key words:
- polycyclic aromatic hydrocarbons /
- persulfate /
- activation methods
-
[1] 肖鹏飞, 姜思佳 . 活化过硫酸盐氧化法修复有机污染土壤的研究进展[J]. 化工进展, 2018,37(12):4862-4873.XIAO P F, JIANG S J . Research progress in remediation of organic contaminated soil by activated persulfate oxidation[J]. Chemical Industry and Engineering Progress, 2018,37(12):4862-4873. [2] 杨德敏, 夏宏, 程方平 . 过硫酸盐氧化修复有机污染土壤的研究现状[J]. 油气田环境保护, 2019,29(1):29-32. [3] 吴昊, 孙丽娜, 王晓旭 . 活化过硫酸钠原位修复石油类污染土壤研究进展[J]. 环境化学, 2015,34(11):2085-2095.WU H, SUN L N, WANG X X . Persulfate in-situ remediation of petroleum hydrocarbon contaminated soil[J]. Environmental Chemistry, 2015,34(11):2085-2095. [4] 刘红梅, 褚华强, 陈家斌 , 等. 过硫酸盐在地下水和土壤修复中的应用[J]. 现代化工, 2015,35(4):42-46.LIU H M, CHU H Q, CHEN J B , et al. Application of persulfate in remediating groundwater and soil[J]. Modern Chemical Industry, 2015,35(4):42-46. [5] 李社锋, 王文坦, 邵雁 , 等. 活化过硫酸盐高级氧化技术的研究进展及工程应用[J]. 环境工程, 2016,34(9):171-174.LI S F, WANG W T, SHAO Y , et al. Progress in advanced oxidation technology of activated persulfate and its engineering application[J]. Environmental Engineering, 2016,34(9):171-174. [6] LEMAIRE J, BUES M A, KABECHE T . Oxidant selection to treat an aged PAH contaminated soil by in situ chemical oxidation[J]. Journal of Environmental Chemical Engineering, 2013,1(4):1261-1268. [7] LUO L, LIN S, HUANG H L , et al. Relationships between aging of PAHs and soil properties[J]. Environmental Pollution, 2012,170:177-182.
doi: 10.1016/j.envpol.2012.07.003 pmid: 22832330[8] 杨世迎, 陈友媛, 胥慧真 , 等. 过硫酸盐活化高级氧化新技术[J]. 化学进展, 2009,20(9):1433-1438.YANG S Y, CHEN Y Y, XU H Z , et al. A novel advanced oxidation technology based on activated[J]. Progress in Chemistry, 2009,20(9):1433-1438. [9] LIANG C, WANG Z S, BRUELL C J . Influence of pH on persulfate oxidation of TCE at ambient temperatures[J]. Chemosphere, 2007,66(1):106-113.
doi: 10.1016/j.chemosphere.2006.05.026 pmid: 16814844[10] DING Y, ZHU L H, YAN J C , et al. Spectrophotometric determination of persulfate by oxidative decolorization of azo dyes for wastewater treatment[J]. Journal of Environmental Monitoring, 2011,13(11):3057-3063.
doi: 10.1039/c1em10454c pmid: 21918751[11] 北京市环境保护局. 场地土壤环境风险评价筛选值:DB11/T 811—2011[S]. 北京:北京市质量技术监督局, 2011. [12] 生态环境部. 污染地块风险管控与土壤修复效果评估技术导则(试行):HJ 25.5—2018[S]. 北京: 中国环境出版社, 2018. [13] 农业部. 土壤检测第2部分:土壤pH的测定:NY/T 1121.2—2006[S]. 北京: 中国环境出版社, 2006. [14] 环境保护部. 土壤和沉积物半挥发性有机物的测定 气相色谱-质谱法:HJ 834—2017[S]. 北京-质谱法: 中国环境出版社, 2017. [15] HUANG K C, COUTTENYE R A, HOAG G E . Kinetics of heat-assisted persulfate oxidation of methyl tert-butyl ether (MTBE)[J]. Chemosphere, 2002,49:413-420.
doi: 10.1016/s0045-6535(02)00330-2 pmid: 12365838[16] 曾彪 . 铁化合物活化过硫酸钠氧化修复多氯联苯污染土壤研究[D]. 杭州:浙江大学, 2014. [17] WILLIAM E, FRISTAD M A F, JEFFREY A K . Persulfate silver ion decarboxylation of car boxylic acids[J]. Journal of Organic Chemistry, 1983,48:3575-3577. [18] LIANG C J, BRUELL C J, MARLEY M C , et al. Persulfate oxidation for in situ remediation of TCE Ⅰ activated by ferrous ion with an without a persulfatehisulfate redox couple[J]. Chemosphere, 2004,55:1213-1223.
doi: 10.1016/j.chemosphere.2004.01.029 pmid: 15081762
点击查看大图
计量
- 文章访问数: 592
- HTML全文浏览量: 168
- PDF下载量: 194
- 被引次数: 0